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Olympus ZD 25mm colour fringing comparison
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To measure colour fringing caused
by lens chromatic aberrations and sensor blooming, we photographed a test
chart, left, with areas of very high contrast.
We tested each lens with the aperture wide open in Aperture Priority mode. The crops are taken from the upper left
corner of the chart and presented here at 100%. |
| All four lenses exhibited some fringing in their extreme corners, although the 14-42mm kit zoom keeps it better under control when zoomed-in. You can also see a little coloured fringing in the corners with the 25mm in our outdoor results. |
Olympus ZD 25mm |
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Olympus ZD ED 50mm |
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Olympus ZD 14-42mm |
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Olympus ZD 14-42mm |
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25mm at f2.8 |
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50mm at f2 |
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14-42mm at 14mm f3.5 |
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14-42mm at 42mm f5.6 |
Olympus ZD 25mm macro comparison
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To measure and compare the Olympus 25mm's macro performance we photographed
a custom chart using it and a number of rival lenses.
The camera was positioned at a distance which
delivered the maximum possible reproduction while maintaining sharp focus.
The dark lines are 10mm apart and the result is not cropped. Smaller areas
are preferred in this test.
The image left was taken with the Olympus 25mm pancake. |
25mm at f8
Max area of 92x69mm |
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The 25mm pancake doesn't pretend to be a macro lens, but delivers a modest result even compared to kit zooms. The best we managed from it was an area measuring 92x69mm, which is comfortably less than either the 12-60mm or the 14-42mm kit lens; the pancake's result also shows some geometric barrel distortion. The winner here though is unsurprisingly the Zuiko Digital 50mm, a dedicated macro lens which can deliver an impressive area measuring just 34x26mm. Now let's take a look at how the pancake performs in terms of geometric distortion. |
Olympus ZD ED 50mm |
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Olympus ZD ED 14-42mm |
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Olympus ZD
12-60mm |
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50mm at f8
Max area of 34x26mm |
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14-42mm at 42mm f8
Max area of 68x50mm |
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12-60mm at 60mm f8
Max area of 58x44mm |
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